Enable hide animation for login screen.

chrome/browser/chromeos/login/webui_login_display_host.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_HOST_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_HOST_H_
 #pragma once
 
 #include <string>
 
@@ skipping 21 matching lines @@
       LoginDisplay::Delegate* delegate) OVERRIDE;
   virtual gfx::NativeWindow GetNativeWindow() const OVERRIDE;
   virtual views::Widget* GetWidget() const OVERRIDE;
   virtual void SetOobeProgressBarVisible(bool visible) OVERRIDE;
   virtual void SetShutdownButtonEnabled(bool enable) OVERRIDE;
   virtual void SetStatusAreaEnabled(bool enable) OVERRIDE;
   virtual void SetStatusAreaVisible(bool visible) OVERRIDE;
   virtual void StartWizard(const std::string& first_screen_name,
                            DictionaryValue* screen_parameters) OVERRIDE;
   virtual void StartSignInScreen() OVERRIDE;
-  virtual void CloseWindow() OVERRIDE;
 
   // BaseLoginDisplayHost overrides:
   virtual WizardController* CreateWizardController() OVERRIDE;
+  virtual void OnBrowserCreated() OVERRIDE;
 
  private:
   // Loads given URL. Creates WebUILoginView if needed.
   void LoadURL(const GURL& url);
 
   OobeUI* GetOobeUI() const;
 
   // Container of the screen we are displaying.
   views::Widget* login_window_;
 
   // Container of the view we are displaying.
   WebUILoginView* login_view_;
 
   // Login display we are using.
   WebUILoginDisplay* webui_login_display_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginDisplayHost);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_DISPLAY_HOST_H_